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[Need help] Black screen about 10 seconds when booting


rain.nguyen
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Hi everyone,

I got a case ( dont know its problem or not) need your advise.
I installed macos sierra 10.12.3, installed web driver for my zotac gtx 960, everything look good, got 90fps with Cinebench benmark. But when booting up, after the bar under apple loads about 50%, the screen flash one time, speaker sound "poop" twice, and black screen show up about 10 seconds, then my screen go to "select user" screen.
Please tell is it normal or not? if not, plz tell me how to fix this.
Thank you very much.

Attached files is my dsdt, ioreg and config

Modify config.zip

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